\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{West}
\pdfinfo{
  /Title (linux-and-unix.pdf)
  /Creator (Cheatography)
  /Author (West)
  /Subject (Linux and Unix Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{3934C7}
\definecolor{LightBackground}{HTML}{F2F2FB}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Linux and Unix Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{West} via \textcolor{DarkBackground}{\uline{cheatography.com/170121/cs/35569/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}West \\
  \uline{cheatography.com/west} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 21st November, 2022.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{TCPDump}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Links}} \{\{width=35\}\} & \{\{width=65\}\} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{\{\{popup="https://www.wains.be/pub/networking/tcpdumpadvancedfilters.txt"\}\}TCPDump Advanced Filters\{\{/popup\}\}} \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{\{\{popup="https://www.tcpdump.org/bpfexam/"\}\}bpfexam\{\{/popup\}\}} \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
\{\{ac\}\}{\bf{Options}} & \{\{ac\}\}{\bf{Description}} \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\{\{ac\}\}{\bf{-e}} & Prints the link-level header on each dump line \tn 
% Row Count 12 (+ 3)
% Row 5
\SetRowColor{white}
{\bf{-n}}\{\{ac\}\} & Prevents tcpdump from converting IP addresses to names when printing output \tn 
% Row Count 16 (+ 4)
% Row 6
\SetRowColor{LightBackground}
{\bf{-nn}}\{\{ac\}\} & Prevents tcpdump from resolving TCP/UDP port numbers to service names \tn 
% Row Count 20 (+ 4)
% Row 7
\SetRowColor{white}
{\bf{-v}}\{\{ac\}\} & Enables verbose output. The -vv and -vvv options provide even more information \tn 
% Row Count 24 (+ 4)
% Row 8
\SetRowColor{LightBackground}
{\bf{-i}}\{\{ac\}\} & Specify the interface name or number on which tcpdump should sniff \tn 
% Row Count 28 (+ 4)
% Row 9
\SetRowColor{white}
{\bf{-D}}\{\{ac\}\} & Prints all network interfaces available to tcpdump \tn 
% Row Count 31 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{TCPDump (cont)}}  \tn
% Row 10
\SetRowColor{LightBackground}
{\bf{-w}}\{\{ac\}\} & Write your captured data to a file \tn 
% Row Count 2 (+ 2)
% Row 11
\SetRowColor{white}
{\bf{-r}}\{\{ac\}\} & Read input from a file \tn 
% Row Count 4 (+ 2)
% Row 12
\SetRowColor{LightBackground}
{\bf{-XX}}\{\{ac\}\} & Prints the entire contents of a captured frame in both hex and ASCII \tn 
% Row Count 8 (+ 4)
% Row 13
\SetRowColor{white}
{\bf{Example Scenario}} & {\bf{Example Answer}} \tn 
% Row Count 9 (+ 1)
% Row 14
\SetRowColor{LightBackground}
Capture frames from eth0. Capture exactly 50 frames. Capture full frames & `tcpdump -i eth0 -e -s0 -c50 -w /tmp/out.pcap` \tn 
% Row Count 13 (+ 4)
% Row 15
\SetRowColor{white}
Capture all traffic to or from 1.1.1.1 & `tcpdump -vnni eth0 host 1.1.1.1` \tn 
% Row Count 15 (+ 2)
% Row 16
\SetRowColor{LightBackground}
Capture all IPv4 traffic & `tcpdump -vnni eth0 ip` \tn 
% Row Count 17 (+ 2)
% Row 17
\SetRowColor{white}
Capture all traffic destined for 2.2.2.2 & `tcpdump -vnni eth0 dst host 2.2.2.2` \tn 
% Row Count 19 (+ 2)
% Row 18
\SetRowColor{LightBackground}
Capture all traffic between 192.168.11.110 and 192.168.111.4 only & `tcpdump -vnni eth0 host 192.168.11.110 and host 192.168.111.4` \tn 
% Row Count 23 (+ 4)
% Row 19
\SetRowColor{white}
Capture all traffic between 192.168.11.110 and the 192.168.111.0/24 network only & `tcpdump -vnni eth0 host 192.168.11.110 and net 192.168.111.0/24` \tn 
% Row Count 27 (+ 4)
% Row 20
\SetRowColor{LightBackground}
Suppose we have a tcpdump version that only allows the older syntax, and we wish to capture only traffic to the 192.168.15.64/26 network & `tcpdump -nnvi eth0 'ip dst net 192.168.15 and ip{[}19{]} \& 0xC0 = 64'` \tn 
% Row Count 34 (+ 7)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.4 cm} x{5.6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Ping}}  \tn
% Row 0
\SetRowColor{LightBackground}
\{\{ac\}\}{\bf{Options}} & \{\{ac\}\}{\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\{\{ac\}\}{\bf{-c}} & Specifies the number of attempts the ping command should make to contact the remote host \tn 
% Row Count 6 (+ 4)
% Row 2
\SetRowColor{LightBackground}
\{\{ac\}\}{\bf{-s}} & Specifies the number of data bytes to send in each ping attempt \tn 
% Row Count 9 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}